A small CLI to calculate annualized rates from principal, interest, and days.
Project description
rate-calculator
rate-calculator is a small Python CLI for calculating an annualized rate from:
- principal
- interest earned
- holding days
Formula:
annualized_rate(%) = (interest / principal) / (days / 365) * 100
Installation
pip install .
Usage
Run with arguments:
rate-calculator --principal 10000 --interest 150 --days 30
Example output:
Annualized rate: 18.25%
Print only the numeric result:
rate-calculator --principal 10000 --interest 150 --days 30 --raw
You can also run it interactively:
rate-calculator
Development
python -m rate_calculator --principal 10000 --interest 150 --days 30
Run tests:
pytest
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